AJAX: Statusbar: force update of UpdatePanel while function executes

I have a label inside an update panel which I would like to use as a status bar.

Basically the user clicks a button which executes a main function that performs a series of tasks. I'd like to inform the user as to the state of the function as it progresses e.g.:

Stage 1: Retrieving data...

Stage 2: Calculating values...

Stage 3: Printing values...

Stage 4: Done!

I've tried updating the updatepanel directly from the function but it only updates the panel at the end of function (stage 4) and shows "Done!" (which I understand is how it should work).

I've been looking into timers and threads to try and update the panel separate to the main function but I though开发者_Python百科t I'd post here in case anyone has any better ideas?

---

Have you put an Update Panel around the label as well? Set UpdateMode to conditional, then when executing your stages, set the label's text then updatePanelProgress.Update() should do it